"Geoarchaeum" is a genus of incertae sedis archaea that does not contain any taxa.[1][2] 
 References
   - ^ Hunt, Kristopher A.; Jennings, Ryan deM.; Inskeep, William P.; Carlson, Ross P. (2016). "Stoichiometric modelling of assimilatory and dissimilatory biomass utilisation in a microbial community". Environmental Microbiology. 18 (12): 4946–4960. doi:10.1111/1462-2920.13444. ISSN 1462-2920. PMC 5629010. PMID 27387069. 
  - ^ Parte, A.C., Sardà Carbasse, J., Meier-Kolthoff, J.P., Reimer, L.C. and Göker, M. (2020). List of Prokaryotic names with Standing in Nomenclature (LPSN) moves to the DSMZ. International Journal of Systematic and Evolutionary Microbiology, 70, 5607-5612; DOI: 10.1099/ijsem.0.004332 
  
  Extant  life phyla/divisions by domain  | 
|---|
 | 
 | 
   | 
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 - Domain
  - Archaea
  - Bacteria
  - Eukaryota
  - (major groups
  - Metamonada
  - Discoba
  - Diaphoretickes 
- Hacrobia 
- Cryptista
 
   - Rhizaria
  - Alveolata
  - Stramenopiles
  - Plants
 
   - Amorphea 
- Amoebozoa
  - Opisthokonta 
- Animals
  - Fungi
  - Mesomycetozoea)
 
  
      | 
| Nanobdellati |  |  | "Iainarchaeota" |  - "Iainarchaeia" 
- "Forterreales"
  - "Iainarchaeales"
 
      | 
|---|
 | "Micrarchaeota" |  - "Micrarchaeia" 
- "Anstonellales"
  - "Burarchaeales"
  - "Fermentimicrarchaeales"
  - "Gugararchaeales"
  - "Micrarchaeales"
  - "Norongarragalinales"
 
      | 
|---|
 | "Nanohalarchaeota" |  - "Nanohalarchaeia" 
- "Nanohalarchaeales"
  - "Nanohydrothermales"
  - "Nucleotidisoterales"
 
   - "Nanohalobiia" 
     | 
|---|
 | Nanobdellota |  - Nanobdellia 
- "Haiyanarchaeaceae"
  - "Jingweiarchaeales"
  - Nanobdellales
  - "Pacearchaeales"
  - "Parvarchaeales"
  - "Tiddalikarchaeales"
  - "Woesearchaeales"
 
      | 
|---|
 
  | 
|---|
 
  | 
| Promethearchaeati | | Heimdallarchaeota |  - "Heimdallarchaeia" 
- "Gerdarchaeales"
  - "Heimdallarchaeales"
  - "Hodarchaeales"
 
   - "Njordarchaeia" 
  - "Sifarchaeia" 
- "Borrarchaeales"
  - "Sifarchaeales"
 
   - "Tyrarchaeia" 
  - "Wukongarchaeia" 
     | 
|---|
 | Promethearchaeota |  - "Asgardarchaeia" 
  - "Atabeyarchaeia" 
  - "Baldrarchaeia" 
  - "Hermodarchaeia" 
  - "Jordarchaeia" 
  - "Odinarchaeia" 
  - Promethearchaeia 
- "Helarchaeales"
  - Promethearchaeales
 
   - "Thorarchaeia" 
     | 
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  | 
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 | 
 | 
  Taxon identifiers  | 
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| Geoarchaeota |  | 
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